Spool support for textile machines



Nov. 5, 1963 M. CDSTERMANN SPOOL SUPPORT FOR TEXTILE MACHINES Filed Aug.23, 1960 39 1.0 2? $293031 3267696670 F/Gl 1811 m Him! \\\\\\\\\\\\5INVENTOR 1% 0mm WS QJQD United States Patent "ce 3,169,605 SPOOL SUPPORTFOR TEXTILE MACHINES Max Ostermann, Wuppertal-Barmen, Germany, assignorto W. & M. Ostermann, Wuppertal-Barmen, Germany,

Filed Aug. 23, 1960, Ser. No. 51,392 Claims priority, applicationGermany Aug. 29, 1959 2 Claims. (Cl. 242-129.S)

The invention relates to a spool support intended for covering,twisting, stranding machines or the like, having several spoolsrotatably mounted upon a common axis, and one adjustable brakingmechanism regulating the run-off speed of the spools. Spool supports ofthis type hitherto known exhibit the disadvantage that the threadsrunning off from the spools have varying tension, as the supply ofthread cannot be sutficiently accurately spooled up on to the individualspools for uniform tension of all the threads to be ensured when thesupply of thread is drawn off.

In order to avoid this disadvantage it is proposed according to theinvention, that the spools adjacent in each case rotate in oppositedirections during the period when the thread is drawn oif, and aresubject, via a friction coupling interposed in each case, to the actionof a torque applied in the wind-up direction of the thread. The en nularbrake lining in contact with the end faces of the outer spools in eachcase is then secured to a disc which is mounted on the side cheeks ofthe spool support swivelably about an axis running perpendicular to thespool axis. A specially favourable mounting is obtained if the discs areconnected each via two mounting eyes arranged level with the spool axisand positively overlapping the side cheeks of the spool support to guiderods running parallel to one another and coupled to the side cheeks at apivot point arranged at a distance from the spool axis, while thebearing pressure of the brake discs is generated via a tension leverswivelably mounted on the cheek of the support, which coacts witheccentric rollers against the free end of the guide rod projectingbeyond the anchorage point of the mounting eyes. The brake disc whichcan be swivelled by the tension lever is conveniently mounted by theinterposition of pressure springs so as to be shiftable towards thespool axis on a plate connected to the guide rods, while the oppositebrake disc acting as a counter-pressure disc is supported by adjustablestop bolts against the one cheek of the spool support.

The accompanying drawings merely show a practical embodiment of theinvention. The latter is not limited thereto. Further possibleembodiments exist, without involving a departure from the idea of theinvention. The drawings show:

FIGURE 1 a sectional elevation of the spool support,

FIGURE 2 a plan according to FIGURE 1,

FIGURE 3 a left-hand elevation of the spool support according to FIGURE1, and

FIGURE 4 a right-hand elevation of the spool support according to FIGURE1.

To the base plate of the spool support are secured in each case the sidecheeks 11 and 12 by bolts 13, which accommodate the spool axis 14 insuitable holes. The spool axis 14 is held by the cheeks 11 and 12unshiftably in an axial direction in the manner that the axis 14exhibits a shouldered end 15 and thereby makes contact by an annularcontact surface in the one direction against the cheek 12, whereas atthe other end machined surfaces 16 are provided which are positivelyoverlapped by the parallel walls of the upper portion of the hole 17formed in a bayonet locking plate 20 mounted shiftably on the cheek 11by the bolt 18, 19, so that the axis 14 is thereby retained securelyagainst twisting and shift- 3,109,605 Patented Nov. 5, 1963 ing in thecheeks 11, 12 of the spool support. The bolts 18 secured in the cheek 11overlap the slots 21, 22 of the plate 20, on which is arranged a handgrip 23 which serves simultaneously as suspension for a traction spring24, the other end of which is secured to a pin 25 of the cheek 11.

Onto the spool axis 14 is pushed .a bushing 26, which accommodates thespools 27-32, while between each two of the spools 27-32 are providedthe brake discs 33-37, which act as a friction coupling. Each of theindividual spools 27-32 is mounted freely rotatable on the bushing 26.Adjacent to the outside flange 38 of the spool 27 is provided a brakedisc 39 with interposed brake lining 40. Two mounting eyes 41, 42, arefixed to brake disc 39 straddling the cheek 11 and which are connectedvia screws 43 with guide rods 44, 45, running mutually parallel, whichare mounted swivelably on the check 11 at their lower ends via a screwbolt 46.

A tension lever 50 is swivelably mounted via the bolt 49 in the mountingeyes 47, 48 on the cheek 12, whilst at the end of the bolt 49 eccentricjournals 51 are provided on each of which is mounted a roller 52respectively 53, which coacts with the free end 54, respectively 55 ofthe guide rods 56, 57, which are swivelably mounted via screw bolts 58on the check 12. Level with the spool axis 14 are located the mountingeyes 59, 60 of the plate 61, which are likewise connected to the guiderods 56, 57. The hub-like continuation 62 of the plate 61 serves toaccommodate in the manner of a bearing the brake disc 63 to which issecured the brake lining 64 which coacts with the end face of the flange65 of the spool 32. Further provided on the plate 61 are threaded bolts66, which engage with pins 67 into the hole 68 of the brake disc 63 andaccommodate in each case a spring 69 which is supported at one endagainst the brake disc 63 and at the other end against the annularsurface of the bolt 66, which may be rotated for the purpose ofadjusting the spring tension via a square head 70.

The spools 27-32 are introduced into the spool support in the mannerthat they are first pushed once on to the bushing 26 with the brakediscs 33-37 interposed. After the tension lever 56 seen in FIGURE 1 hasbeen swivelled counter clockwise into its inoperative upward pointingposition and space has thereby been created for the introduction of thebushing 26 which carries the spools 27-32 between the two brake discs 39and 63, the plate 20 is raised by means of the hand grip 23 against theaction of the spring 24 far enough for the axis 14 to be pushed throughthe hole 17 into the bushing 26 such a distance that the shouldered end15 of the axis 14 is accommodated by the hole in the check 12 and thatafter the hand grip 23 has been released the plate 20 is able to moveinto its operative position represented in FIG. 1 and 3, in which theaxis 14 is firmly held against twisting and shifting by the plate 20.The tension lever 15 is subsequently swivelled out of its upwardpointing inoperative position, not shown, into the position according toFIGURE 1, while the tension rollers 52 and 53 coact with the free ends54 and 55 of the guide rods 56 and 57, so that the latter are swivelledcounter-clockwise about the point 58, whereby the plate 61 and the brakedisc 63 with the brake lining 64 press upon the flange 65 of the outerspool 32, and after the adjustable stops 71, 72 on the brake disc 39have made contact with the cheek 11, the spools 27-32 are compressed inan axial direction. The spools 27-32 are so arranged on the bushing 26,that upon the threads 73 being drawn oif, the spools 27, 29 and 31rotate in the direction of the arrow 74, whilst when the threads 75 aredrawn ofi, the spools 28, 30 and 32 rotate in the opposite directionaccording to the arrow 76 indicated. By the interposed brake disc 33-37a counter-directed torque is thereby exerted upon each pair of adjacentspools 27,

28 respectively 29, 30 etc. when the threads are drawn off, which hasthe effect that the required uniform thread tension of every thread isguaranteed even independently of the winding diameter of the spoolconcerned. The spool support is secured by the securing plate 10 to therotating table of the rotary plate of a covering machine, strandingmachine or twisting machine via bolts engaging through the holes 77.

I claim:

1. Spool support for a braiding machine or the like comprising, incombination, a support bracket having a pair of side plates extendingspaced from and substantially parallel to each other, each of said sideplates being formed with a bore therethrough aligned along a common axissubstantially normal to said side plates; a shaft extending through saidbores; locking means mounted on one of said side plates movable betweena locking position engaging said shaft for holding the same in fixedposition on said bracket and a releasing position permitting withdrawalof said shaft from said bracket; a plurality of spools mounted on saidshaft adjacent each otherfor rotation about said common axis, each ofsaid spools having a pair of end faces substantially normal to saidcommon axis; a friction disk located between adjacent end faces of anytwo adjacent spools and frictionally engaging said end faces so as totransmit a moment imparted to one spool to the spools adjacent thereto,whereby when filaments, wound on adjacent spools in opposite directions,are pulled off, said spools will be respectively turned in oppositedirections and a braking moment will be imparted to each spool by thespool adjacent thereto, a pair of braking disk means arranged coaxialwith said spools about said shaft and respectively frictionally engagingthe outer end faces of the outermost of said plurality of spools; a pairof arms respectively arranged on opposite sides 4 of each of said sideplates and each connected at one end thereof to the respective sideplate for pivotal movement about a pivot axis substantially normal tosaid common axis; means pivotally connecting each of said brake diskmeans to the pair of arms adjacent thereto substantially at the regionof said common axis for pivotal movement about an axis substantiallynormal to said common axis; pressure means mounted on one of said sideplates and engaging the pair of arms mounted thereon at free endsthereof distant from said turning axis for turning the free ends of saidone pair of arms towards the other of said side plates for movingthereby the brake disk means connected to said one pair of arms towardthe other of said brake disk means; and adjustable stop meanscoordinated with the other of said brake disk means for limiting themovement thereof toward the other of said side plates.

2. An arrangement as defined in claim 1 in which said one brake diskmeans comprises a first disk connected to said arms and having a hubportion surrounding said shaft with clearance and directed away fromsaid one side plate towards the spool adjacent thereto; a second diskslidably mounted on said hub; an annular friction liner mounted on saidsecond disk and facing the adjacent end face of the spool adjacentthereto; and spring means operatively connected to said disks forpressing sa'id friction liner in engagement with said end face.

References Cited in the file of this patent UNITED STATES PATENTS127,722 W'hitaker et a1. June 11, 1872 778,494 Kreeger Dec. 27, 1904958,062 Adkins May 17, 1910 1,379,164 Bullis May 24, 1921 2,911,875Ostermann et a1 Nov. 10, 1959 mm u

1. SPOOL SUPPORT FOR A BRAIDING MACHINE OR THE LIKE COMPRISING, INCOMBINATION, A SUPPORT BRACKET HAVING A PAIR OF SIDE PLATES EXTENDINGSPACED FROM AND SUBSTANTIALLY PARALLEL TO EACH OTHER, EACH OF SAID SIDEPLATES BEING FORMED WITH A BORE THERETHROUGH ALIGNED ALONG A COMMON AXISSUBSTANTIALLY NORMAL TO SAID SIDE PLATES; A SHAFT EXTENDING THROUGH SAIDBORES; LOCKING MEANS MOUNTED ON ONE OF SAID SIDE PLATES MOVABLE BETWEENA LOCKING POSITION ENGAGING SAID SHAFT FOR HOLDING THE SAME IN FIXEDPOSITION ON SAID BRACKET AND A RELEASING POSITION PERMITTING WITHDRAWALOF SAID SHAFT FROM SAID BRACKET; A PLURALITY OF SPOOLS MOUNTED ON SAIDSHAFT ADJACENT EACH OTHER FOR ROTATION ABOUT SAID COMMON AXIS, EACH OFSAID SPOOLS HAVING A PAIR OF END FACES SUBSTANTIALLY NORMAL TO SAIDCOMMON AXIS; A FRICTION DISK LOCATED BETWEEN ADJACENT END FACES OF ANYTWO ADJACENT SPOOLS AND FRICTIONALLY ENGAGING SAID END FACES SO AS TOTRANSMIT A MOMENT IMPARTED TO ONE SPOOL TO THE SPOOLS ADJACENT THERETO,WHEREBY WHEN FILAMENTS, WOUND ON ADJACENT SPOOLS IN OPPOSITE DIRECTIONS,ARE PULLED OFF, SAID SPOOLS WILL BE RESPECTIVELY TURNED IN OPPOSITEDIRECTIONS AND A BRAKING MOMENT WILL BE IMPARTED TO EACH SPOOL BY THESPOOL ADJACENT THERETO, A PAIR OF BRAKING DISK MEANS ARRANGED COAXIALWITH SAID SPOOLS ABOUT SAID SHAFT AND RESPECTIVELY FRICTIONALLY ENGAGINGTHE OUTER END FACES OF THE OUTERMOST OF SAID PLURALITY OF SPOOLS; A PAIROF ARMS RESPECTIVELY ARRANGED ON OPPOSITE SIDES OF EACH OF SAID SIDEPLATES AND EACH CONNECTED AT ONE END THEREOF TO THE RESPECTIVE SIDEPLATE FOR PIVOTAL MOVEMENT ABOUT A PIVOT AXIS SUBSTANTIALLY NORMAL TOSAID COMMON AXIS; MEANS PIVOTALLY CONNECTING EACH OF SAID BRAKE DISKMEANS TO THE PAIR OF ARMS ADJACENT THERETO SUBSTANTIALLY AT THE REGIONOF SAID COMMON AXIS FOR PIVOTAL MOVEMENT ABOUT AN AXIS SUBSTANTIALLYNORMAL TO SAID COMMON AXIS; PRESSURE MEANS MOUNTED ON ONE OF SAID SIDEPLATES AND ENGAGING THE PAIR OF ARMS MOUNTED THEREON AT FREE ENDSTHEREOF DISTANT FROM SAID TURNING AXIS FOR TURNING THE FREE ENDS OF SAIDONE PAIR OF ARMS TOWARDS THE OTHER OF SAID SIDE PLATES FOR MOVINGTHEREBY THE BRAKE DISK MEANS CONNECTED TO SAID ONE PAIR OF ARMS TOWARDTHE OTHER OF SAID BRAKE DISK MEANS; AND ADJUSTABLE STOP MEANSCOORDINATED WITH THE OTHER OF SAID BRAKE DISK MEANS FOR LIMITING THEMOVEMENT THEREOF TOWARD THE OTHER OF SAID SIDE PLATES.